presence of toxic metals in agricultural soils can impose adverse health impact on consumers. the main purpose of this study was to determine spatial distribution of elements fe, sb, mn in agriculture soils and crops of hamedan province in iran. soil samples (0-20 cm depth) were collected from an area of 2831 km2.  iron, antimony and manganese in samples of soil and agricultural crops were extr...

This paper estimates the role of agronomic inputs in cereal yield improvements and the consequences for countries' processes of structural change. The results suggest a clear role for fertilizer, modern seeds and water in boosting yields. We then test for respective empirical links between agricultural yields and economic growth, labor share in agriculture and non-agricultural value added per w...

Agricultural Extension services are among the most important rural services in developing countries. The services are considered to be a key driver of technological change and productivity growth in agriculture. In Kenya, like in the rest of the developing economies, agricultural extension has largely been delivered through supply–driven approaches. Due to perceived low impact of agricultural e...

The paper examines effects of agricultural extension on crop yields in Kenya controlling for other determinants of yields, notably the schooling of farmers and agro-ecological characteristics of arable land. The data we use were collected by the Government of Kenya in 1982 and 1990, but the estimation results reported in the paper are based primarily on the 1982 data set. The sample used for es...

Prediction of agricultural yields is a challenging task that demands fusion of knowledge from different areas such as data mining, statistics and agriculture. This paper shows that data mining techniques can be successfully applied to agricultural data analysis. Results that we present are gained on the data set that contains monthly measurements of different environmental parameters and annual...

Agricultural productivity levels in Mozambique lag behind most of its neighbors that have climatic and socioeconomic similarities. Data from the World Bank (2012) indicate that the average cereal yields in 2011/12 in Mozambique were estimated at 700 kg/ha, which is three and four times lower than the average cereal yields in Malawi (2.1 ton/ha) and Zambia (2.7 tons/ha), respectively. The limite...